fix: update agent field names in frontend to match backend DTO

The AgentInstanceResponse backend DTO uses instanceId, displayName,
applicationId, status — but the stale schema.d.ts still had id, name,
application, state. This caused the runtime table to show no data.

- Update schema.d.ts AgentInstanceResponse fields
- Fix AgentHealth: row.id→instanceId, row.name→displayName,
  row.application→applicationId, inst.id→instanceId
- Fix AgentInstance: agent.id→instanceId, agent.name→displayName
- Fix ExchangeHeader: agent.id→instanceId, agent.state→status
- Fix LayoutShell search: agent.state→status, agentTps→tps

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

ui/src/pages/AgentHealth/AgentHealth.tsx

@@ -70,7 +70,7 @@ interface AppGroup {
 function groupByApp(agentList: AgentInstance[]): AppGroup[] {
   const map = new Map<string, AgentInstance[]>();
   for (const a of agentList) {
-    const app = a.application;
+    const app = a.applicationId;
     const list = map.get(app) ?? [];
     list.push(a);
     map.set(app, list);
@@ -225,7 +225,7 @@ export default function AgentHealth() {
             title="Open instance page"
             onClick={(e) => {
               e.stopPropagation();
-              navigate(`/agents/${row.application}/${row.id}`);
+              navigate(`/agents/${row.applicationId}/${row.instanceId}`);
             }}
           >
             <ExternalLink size={14} />
@@ -236,7 +236,7 @@ export default function AgentHealth() {
         key: 'name',
         header: 'Instance',
         render: (_val, row) => (
-          <MonoText size="sm" className={styles.instanceName}>{row.name ?? row.id}</MonoText>
+          <MonoText size="sm" className={styles.instanceName}>{row.displayName ?? row.instanceId}</MonoText>
         ),
       },
       {
@@ -298,7 +298,7 @@ export default function AgentHealth() {
   );
 
   function handleInstanceClick(inst: AgentInstance) {
-    navigate(`/runtime/${inst.application}/${inst.id}`);
+    navigate(`/runtime/${inst.applicationId}/${inst.instanceId}`);
   }
 
   const isFullWidth = !!appId;
@@ -526,9 +526,9 @@ export default function AgentHealth() {
               ) : undefined
             }
           >
-            <DataTable<AgentInstance>
-              columns={instanceColumns}
-              data={group.instances}
+            <DataTable<AgentInstance & { id: string }>
+              columns={instanceColumns as Column<AgentInstance & { id: string }>[]}
+              data={group.instances.map(i => ({ ...i, id: i.instanceId }))}
               onRowClick={handleInstanceClick}
               pageSize={50}
               flush